Постройте график функции y=(x^2-3x-4)/(x+1).

\[y = \frac{x^{2} - 3x - 4}{x + 1} = \frac{(x + 1)(x - 4)}{x + 1} = x - 4\]

\[x^{2} - 3x - 4 = (x + 1)(x - 4)\]

\[x_{1} + x_{2} = 3;\ \ x_{1} \cdot x_{2} = - 4\]

\[x_{1} = 4;\ \ x_{2} = - 1.\]

\[y = x - 4;\ \ где\ x \neq - 1\]